static JPanel jTiledBackground(S imageID) {
  final BufferedImage tileImage = loadImage2(imageID);
  ret new JPanel {
    protected void paintComponent(Graphics g) {  
      paintTiledBackground(this, g, tileImage);
    }
  };
}
  
static JPanel jTiledBackground(S imageID, Component contents) {
  JPanel panel = jTiledBackground(imageID);
  panel.setLayout(new BorderLayout);
  panel.add(BorderLayout.CENTER, jtransparent_recursive(contents));
  ret panel;
}